Printing press



May 19, 1925.

C. J. WRIGHT PRINTING PRESS ile 1921 Z SheetS-Shee t 1 C. J. WRIGHTPRINTING PRESS May' w, 1925;

- 2 sheets shaet 2 Filed Oct. '7, 1921 Patented May 19, 1925.

UNITED STATES PATENT OFFICE.

CHARLES J. WRIGHT, F CLEVELAND, OHIO, ASSIGNOR TO THE HARRIS AUTOMATICrnnss coMrAN or CLEVELAND,

OHIO, A conrona'rron or OHIO.

PRINTING rnrss.

Application filed October 7, 1921. Serial 110. 506,138.

To all whom it may concern:

' Be it known that I, CHARLES J. WRIGHT, a citizen of the United States,and a resident of the city of Cleveland, in the county of Cuyahoga andState of Ohio, have invented certain new and useful Improvements inPrinting Presses, of which the following is a specification, referencebeing made to the accompanying drawings,

thereof.

My invention relates more particularly to rotary printing presses of thetwocolor type, and the object of my invention is, among other things, toprovide a simple yet effective means to obtain accurate registration ofthe colors which are being printed on the paper. I accomplish thisobject by mounting the transfer cylinder so as to be transverselyshiftable on its support, and I further provide means for slightlyshifting such transfer-cylinder laterally in either direction to apredetermined requirement, and then maintaining such means in thecorrect position to obtain proper registration of the colors on thepaper that is being printed while the press continues in operation. Theaccompanying drawings show theembodiment of my invention in a two coloroff-set press, the same serving to fully explain the invention, which isnotrestricted, however, to any particular form of rotary presses,improvement is s1nce my equally applicable to a twocylinder press inwhich the two impression cylinders are connected bya shiftable transfercylinder, or to other types of presses.

In the drawings Figure 1 is a skeleton side elevation view of atwo-color ofi-set press connected by a transfer cylinder which may betransversely shifted to illustrate my invention;

Figure 2 is an enlarged sectional View taken on the line 22 of Fig. 1looking in the direction of the arrow;

Figure 3 is a section taken on the line 3'3 of Fig. 2 looking in thedirection of the arrow; and

Figure 4 is an enlarged section taken on the line 4- 1 of Fig. 2 lookingin the direction of the arrow.

Similar numerals refer to similar parts throughout the several figures.

Referring to the construction shown in forming a partgear wheel 25Figure l, the frame-work 5 supports the bearings of the two plate orform-cylinders 6 and, 7 the twarubber cylinders8 and 9, and the twoimpression-cylinders 10 and 11. Between the two impression-cylinders 10and 11 18 "arranged the transfer-cylinder 12 mounted on the shaft 13journalled in the frame 5, the cylinder 12 being slightly shiftable in.either direction .on the shaft 13 which has the gear 14 (Fig. 2) toenmesh with the gears (not shown) of the cylinders 10 and 11'. Thecylinders 10, 11 and 12 have the grippers 10, 11 and 12 respectively,carrymg and releasing the successive sheets in suitable timed relation.All seven cylinders are relatively arranged with respect to each otheras shown in Fig. 1, and are geared together to rotate in unison.

Referring more particularly to Figs. 2, 3 and 4, I have ,secured to theinner side of the frame 5 the bracket15 on which is rigidly secured theupper and larger portion 16 of a circular guide plate 17 through whichthe shaft 13 loosely passes as shown in Fig. 1 3. The lower and smallerportion 18 is pivotally secured to the portion 16 by pins 19 so thatthis lower portion 18 may be moved transversely of the press, such partscomprising an adjustable-throw-cam. The transfer-cylinder 12 has securedto its lefthand end (Fig. 2) the bracket'20 on which are, rotatablymounted two spaced-apart rollers 21 and 22 so arranged that'each rollerbears frictionally on opposite sides of the guide plate 17 as shown inFig. 2. When the cylinder 12 is revolved the rollers 21 and 22 travel ina circular path within the edge of the guide plate 17 as shown in Figs;2 and 3.

Means are provided to move the lower portion 18 transversely on the pinsin either direction at will and to any predetermined inclination: Theportion 18 has aflixed thereto the bracket 23 to which is" pivoted thescrew-bolt 24 extending outwardly through an opening formed in the frame5 as shown in Fig. 2. Threaded on the bolt 21 is the g ar wheel 25 whichis-journalled in the frame 5 and rotatedby a worm 26 mounted on theshaft 27 journalled in the brackets 28 secured to the frame 5. worm 26is turned in either direction by the handle 29 secured to the shaft 27as shown. Mounted, on the inner end of' the is the plate 30'having the31 cut therein within which 110 segmental slot The U cordin' slot is thepin 32 aflixed to the frame 5 as shown in Figs. 2 and 4. This pin andslot arrangement limitsthe rotation of the gear wheel in' eitherdirection by the pin engaging with the ends of the slot. The outersurface of the gear wheel 25 preferably has the graduated scale marks 33cut therein to co-act with the indicator or pointer 34 suitably securedto the frame 5 to enable the op-' erator to set the lower portion 18 ofthe guide plate 17 at any predetermined inclination in order to shiftthe cylinder 12 acgly. The method of operating my improved attachmentduring the operation of the press is shown in Fig. 2: When the cylinder12 is rotating in the position shown in full lines, the lower portion18' of the guide plate 17 is in direct vertical alinement with the--fixed .upper portion 16 and the rollers 21 and 22 are revolving each invertical mutually parallel planes on either side of the guide-plate 17all as shown in'full lines in Fig. 2. Should it be necessary in securingcorrect registration of the two. colors to slightly shift the cylinder12 to the left on the shaft 13 as shown in dotted lines, the operatorturns the handle 29 to rotate through several degrees the gear wheel 25manner the cylinder 12 may be shifted to opposite direction.

the right by turning-thehandle 29 in an The pin 32 engaging,

- either end of the slot 31 prevents the operator'from unduly turningthe gear wheel 25.:

' and the scale 33' and indicator 34; enable him to set such wheel at'anaccurate--prede termined amount so as to obtain, precise regv istrationof the colors used on the press.v

The shifting of the cylinder 12 to its predetermined position beginsafterthe'printing is complete for the first color, and such transversemovement is completed before the leading edge of the sheet having thefirst color is released and transferred to the impression cylinder forthe second color.

Furthermore the cylinder 12 is restored 'to its normal transverseposit-ion before the leading. edge of the next successive sheet istransferred to the cylinder 12,, all irrespective of the direction orextent of the shifting of such cylinder.

My invention, in its broader aspects, is not limited to the particularconstruction and arrangement of cylinders and parts shown, as manychanges may be made with-* out departing from the main principles ofsions.

shiftable on its transverse'support.

the invention and" without sacrificing its chief advantages."Furthermore my improvements may be used on any multicolor press havin asingle impression-cylinder coacting at different periods with two.printing surfaces, the impression-cyllnder being shiftedbetween the twoprinting impres- I claim as myinvention V 1. In a printing-press, a'pairof sheetcarrying' members, and aninterposed 00- actingsheet-carrying memb er,- laterally- 2. In a printing-press,.a pair of sheetcarryingmembers, and an interposed coacting transfer-cylinder, and. means forshifting said transfer-cylinder laterally with respect tothe pair ofsheet-carrying members. 7

3. In a printing-press, a pairv of sheetcarrying members, and aninterposed coacting transfer-mechanlsm, and means for 1 .shlftlng 1neither d rection sald transfermechanism laterall-y'w'ith respect to thepair of-sheet-carrying members at will. 4. In a printing-press, a pairof sheetcarrying members, and an interposed co- 1 actingtransfer-cylinder, and means for shifting said transfer-cylinderlaterally with respect to the pair oflsheet carrying members while thepress is in operation.

5. In a printing-press, ,a pairof sheetcarrying members, an interposed.coacting transfer-cylinder, and means for shifting in either directionsaid transfer-cylinder laterally with respect to the pa'lr ofsheetcarrying members while the press is in operation. 1

6. In a two-color printmg press, a pair of impression-cylinders, aninterposed coac'ting transfer-cylinder, and -means for shifting ineither direction saidtransfercylinder transversely wlth respect to said.

impression cylindersv While the press is in operation.

7. In a two-color printing press, a pair of impression-cylinders, aninterposed coacting transfer cylinder, means for shifting in eitherdirection said transfer-cylinder transversely with respect .tosaidimpression cylinders while the press is in operation,

and means to limit the action of said shifting means in eitherdirection.

8. In a printing-press, .a .pair of sheetv carrying members, aninterposed coacting transfer-cylinder, means comprising anadjustable-throw-cam to shift said transfercylinder with respect to saidpair, of. sheetcarrying members, and means; to regulate the throw ofsaid cam to any predetermined inclination whereby the shifting of thetransfer-cylinder may be fixed toa predetermined amount.

9. In a printing-press, a pair of sheetcarrying members, an interposedcoacting transfer-cylinder, means comprising an adjustable-throw-cam toshift said transfercylinder with respect to said pair of sheetcarryingmembers, means to regulate the throw of said cam to any predeterminedinclination whereby the shiftingof the transfer-cylinder maybe fixed toa predetermined amount, and means to limit the action of said shiftingmeans in either direction.

10. In a two-color printing press, a pair of impression-cylinders, aninterposed coacting transfer-cylinder, and means comprising anadjustable-throw-cam acting on said transfer-cylinder for moving thelatter transversely with respect to said impressioncylinders.

.11. In a two-color printing press, a pair" of impression-cylinders, aninterposed coacting transfer-cylinder, and means comprising anadjustable-throw-cam acting on said transfer-cylinder to move the lattertransversely in either direction withv respect to saidimpression-cylinders and to hold same in any predetermined position.

12. In a printing-press, a pair of sheetcarrying members, an interposedcoacting transfer-mechanism and means for laterally shifting saidtransfer-mechanism during a predetermined portion of its rotationwith{)espect to the pair of sheet-carrying mem ers.

13. In a printing-press, a pair of sheetcarrying members, an interposedcoacting transfer-cylinder and means for laterally shifting saidtransfer-cylinder a predetermined distance during a predeterminedportion of its rotation with respect to the pair of sheet-carryingmembers.

14. In a printing-press, a pair of sheetcarrying members, an interposedcoacting transfer-cylinder and means for transversely shifting saidtransfer-cylinder apredetermined distance during one part, and forrestoring same to its original position during another part, of itsrotation.

15. In a printing-press, a rotatable sheetcarrying cylinder, and meansfor reciproeating said cylinder transversely with re--' spect to thepress during each revolution of said cylinder.

16. In a printing-press, a rotatable sheetcarrying cylinder, and meansfor shifting said cylinder transversely in both directions with respectto the press during each revolution of said cylinder.

17. In a printing-press, a rotatable sheetcarrylng cylinder andautomatic means for transversely shifting said cylinder a pre-' carryingcylinder and means operable during each revolution. of said cylinder toshift the cylinder transversely to a predetermined position and torestore'said cylinder to its original position. I

19. In a Punting-press, a rotatable sheetcarrying cylinder, meansfortransversely shifting said cylinder a predetermined dis-.

tance during a predetermined portion of its rotation, and means forreturning said 1 cylinder to its original'transverse position duringanother predetermined portion of said rotation.

20. In a printing-press, a rotatable sheetcarrying cylinder, meansfor'shifting said cylinder to different transverse positions withrespect to the press durin each revolution thereof while carrying anreleasing the sheet.

21. In a..'m11lt1-C0l01f printing-press, a printing couple for printinga sheet in one color, means for thereafter laterally shifting the sheetless than its width with respect to said printing couple, and .separatemeans for thereafter printing another color on the sheet.

22. In a multi-color printing-press, a

printing couple for printing the first color on the sheet, means forthereafter shifting said sheet a predetermined distance less than itswidth laterally with respect to said printing couple, and separate meansfor thereafter printing another color on the sheet.

23. In a multicolor printing-press, a printing couple for printing adesign on the sheet, means for laterally shifting the sheet less thanits width after said printing with respect to its path of travel throughthe press, and separate means for thereafter printing another design onthe sheet.

24. In a multicolor. printing-press, a printing couple for printing adesign on a sheet of stock, means for holding the sheet while being soprinted, means for transversely shifting said holding means and saidsheet with respect to its path of travel, and separate means forthereafter printing another design on the sheet.

. CHARLES J. WRIGHT.

